Knife-wiper for linotypes.



PATBNTED JAN. 16, 1906. P. A. PBTTIT. KNIFE WIPER FOR LINOTYPBS.

APPLICATION FILED APR. 6, 1905.

2 SHEETS-SHEET 1.

No. 810,079. PATBNTED JAN. 16, 1906. 1?. A. PETTIT.

KNIFE WIPER FOR LINOTYPES.

APPLICATION FILED APR. 6, 1995.

2 sums-sum 2. V

ll/iifnesses:

Invenifoz;

UNITED STATES PATENT orrion.

KNIFE-WIPER FOR LINOTYPES.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed April 6, 1905- Serial No. 254,135.

and which will have a positive five-inchstroke at all times or, moreparticularly speaking, to provide means when recasting a bold-face linethirty picas or five inches long for raising the knife-wiper its fulldistance, (five inches,) thereby permitting a five-inch slug to passbetween the knives. This is effected while the first-elevatorslide-recasting bankinglever is used to prevent the elevator fromascending so high as to let the bold-face characters drop into line withthe Roman characters.

Third, to provide a knife-wiper that will not dull the knives nor beworn out by rubbing upon the knife-edges, and that is practicallyunbreakable, and that has no springs in connection therewith.

Without my improvement when recasting a mixed line the elevator isprevented from ascending to its usual height by the action of the saidrecasting banking-lever, and at such times the knife-wiper has a shorterstroke by fivesiXteenths of an inch. With my improvement the knife-wiperwill always have a full five-inch stroke and a five-inch slug can passbetween the knives.

I will now proceed to describe my invention, reference being had to theaccompanying drawings, in which- Figure 1 is a front elevation of thevise. the first elevator, and my improvements attached thereto, theelevator being in its normal position. Fig. 2 is a right-hand sideelevation of the vise, the main part of the elevator, one of the knives,the knife-wiper, and its actuating parts, the right-hand lockingstud ofthe vise being broken away. Fig. 3 is an outside view of my knife-wiper.Fig. 4

is a detached perspective view of the knifewiper rod and theknife-wiper. Fig. 5 is a sectional detail, enlarged, taken on line a bof Fig. 2. Fig. 6 is a detail, enlarged, of the latch-pawl in elevatedposition. Fig. 7 is a sectional detail, enlarged, taken on line 0 (Z ofFi 2.

T is the vise or frame on which the first elevator is mounted. 2 is thefirst elevator.

3 and 4 are the slide-gibs, which guide the right-hand beveled edge ofthe elevator.

5 represents the front trimming -knives one of which is shown in Fig. 2and both of which are shown in transverse section in Fig. 5. These arethe knives which trim the ribs ofi the slugs as the slugs are forcedbetween them by the ejector.

Fig. 4 is a perspective view of my improved wiper and the U-shaped rodby which it is actuated. The long straight portion 6 of this rod issupported by guides 7 and 8, which are secured, respectively, to theslide-gibs 3 and 4. Thusthe rod 6 is capable of a vertical reciprocatingmovement. Fixed on said rod are an upper collar12 and a lower collar 13.Secured to the elevator 2 is a bracket 14. (Shown in detail in Figs. 6and 7 .1 The lower collar 13 is set at such a point that the bottom ofthisbracket 14- will engage it, and thereby push down the rod 6 when theelevator descends. Mounted on the top of bracket 14 is a latch-pawl 15,which can be turned by the operator upon a pivot-pin 16 to either ahorizontal or upright position. In Fig. 7 it is shown in horizontal orlowered position, and in Figs. 6 and 1 it is shown in upright or raisedposition. When in raised position, its end is five-sixteenths of an inchhigher than its upper side when it is in lowered position, resting onits bracket 14. This will be understood by reference to Fig. 1 and thefact that the length of this pawl exceeds its width byjust the rightamount to make the difference of five-sixteenths of an inch in itsheight in the two positions named. It is bifurcated, as shown in Figs. 6and 7, so that it will not strike the rod 6 when lowered, but straddlesit, as shown. One side and the end of the latchpawl 15 are adapted toengage the up per collar 12 on rod 6 when the elevator ascends. Therebythe rod 6 is given its upward stroke.

As shown in Figs. 1 and 4, the rod 6 is bent horizontally, forming ashort portion 6, then upwardly, as shown at 6 then obliquely upward, asshown at 6 and finally straight up, as shown at 6 The wiper 16 isattached to the portion 6 in any suitable manner. He-

1 ferring to Fig. 5, the wiper has a main straight ICC portion 16, whichis always in Contact with the knife-edges, and an inwardly-bent portion16 the end of which is in contact with surface 17 of one of the knives.Said portion 16 has a downward extension 16 which is necessitated by thefact that the left-hand knife is a fraction of an inch shorter at thetop than the right-hand knife. Thus the part 16 may pass above theleft-hand knife, but the extension 16 will always touch the other. Therod at 6 is lightly pressed against the face of theleft-hand knife byitsown resilience. The wiper 16 cannot bear very hard upon the knife-edges,owing to the contact of part 16 with the surface 17. Hence they will notbe dulled thereby, and the wiper will not be cut by them. Both 'of thesefaults are noticeable with the old-style wipers.

.19 is the recasting bankingdever. It is fulcrumed on the lower side ofthe bottom gib 4. As is well known, the position of this leverdetermines the height to which the elevator 2 is raised. When this leveris thrown to one side, it shortens the upward stroke of the elevator 2by five-sixteenths of an inch by throwing in a stop for a set-screw 20.Now, whenever this recasting banking-lever is used the operator turnsdown the latch-pawl 15. When the elevator 2 has moved up as far as itcan go, it is obvious that collar 12 and rod 6 will be pushed up exactlyas far as if the re casting banking-lever had not been used Thereforethe knife-wiper will move up its full five inches, which is the obj cctfor which the latch-pawl 15 is provided. When the recastingbanking-lever is not used, the latchpawl 15 is turned up, which is itsnormal position. In other words, the latch-pawl is never lowered unlessthe operator is recasting a thirty-pica or five-inch black-letter line.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a linotype-machine, in combination with the first elevator, avertically-movable knife-wiper rod, a knife-wiper, and means, carried bysaid elevator, and controllable by the operator, for raising the strokeof the knife-wiper when recasting mixed five-inch slugs; substantiallyas described.

2. In a linotype-machine, in combination with the first elevator, avertically-movable knife-wiper rod, a knife-wiper, two projectionscarried by said rod, a pawl carried by the elevator and movable by theoperator, for engaging the upper projection and lifting said wiper-rodto a greater or less height; substantially as described.

3. In a linotype-machine, in combination with the first elevator, avertically-movable knife-wiper rod, guides for said rod, said guidesbeing stationary with respect to the elevator, an upper collar and alower collar fixed upon said rod, a bracket carried by the elevator andadapted to depress the lower collar, and a pawl pivoted on said. bracketand capable of lifting the upper collar to a greater or less height,depending on the po sition of the pawl; substantially as described.

4. In a linotype-machine, in combination with the front trimming-knives;a knife-wiper having a portion 16 which engages the edges of the knives,and having a bent portion 16 which touches the outer face of one of theknives; substantially as described.

5. In a linotype-machine, in combination with the front trimming-knives,a knife-wiper having a bent portion 16 which touches the outer face ofone of the knives, and having a downwardly-projecting portion 16substantially as described.

In testimony whereof I aflix my signature in the presence of twowitnesses.

FRANK A. PETTIT.

WVitnesses:

K. M. IMBODEN, R. E. HAMILTON.

